The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 24, 2024
Filed:
Mar. 24, 2021
Canon Kabushiki Kaisha, Tokyo, JP;
Shin Kitamura, Ibaraki, JP;
Nobuyoshi Sugahara, Tokyo, JP;
Daisuke Tsujimoto, Tokyo, JP;
Kazunari Ooyama, Ibaraki, JP;
Yuu Nishimura, Chiba, JP;
Kazuki Murata, Ibaraki, JP;
Toru Takahashi, Ibaraki, JP;
Ryo Nakajima, Chiba, JP;
Hitoshi Sano, Chiba, JP;
Koh Ishigami, Chiba, JP;
Takaho Shibata, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A toner comprising a toner particle containing a binder resin containing at least 50 mass % of a polyester resin, wherein the polyester resin contains a polyester resin A having a silicone segment, and in XPS analysis, when X is a ratio of the number of silicon atoms attributable to silicone segments relative to a total number of measured atoms, X1 is a value of the X on the toner particle surface, X2 is a value of the X at a depth of 30 nm from the surface, Z is a ratio of the number of carbon atoms attributable to ester bonds relative to a total number of measured atoms, Z1 is a value of the Z on the toner particle surface and Z2 is a value of the Z at a depth of 30 nm from the toner particle surface, X1, Z1, X2 and Z2 satisfy a specific relationship.